MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
I have recently designed a Lego Modular Castle system. While demonstrating it at Brckcon. A few people suggested printing the modules instead of making them out of Legos. You might want to check out what my modules look like to give you more ideas on how to print more castle like models. You can find pictures of the modules
Let me know if you are interested in working together on something.